Manifold construction



Feb. 21, 1928.

C. L. MGCUEN MANIFOLD CONSTRUCTION Filed March 1'?. 1924 m a .i

Svwcuo cheff/7124 of. Mo C'wan/ 5M. www@ lar/11111' @Noruega cylinders an Patented Feb. 21,1928.

'UNITED sTA'riss` y 1,659,659 PATENT OFFICE.N

, CHARLES L. MOCUEN, OF DETROIT, MICHIGAN, uASSIGNOB, TO PERFECTION ENGINEER- ING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

MANIFOLD CONSTRUCTION.

Application med Iarch 17, 1924. Serial No. M9327.

. 10 the explosive mixture. Another object is the provision of an intake and exhaust manifold construction for respectively conducting equal volumes of explosive mixture to and receiving the exhaust gases from the in which a wall of theintake manifold is heated by the exhaust manifold. With these as well as other objects in view, the invention resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set, forth.

In the drawings: Figure l is a side elevation of a manifold construction embodying my invention;

Figure 2 is a cross section on the line 2-2 of Figure 1 and showing, in addition, a portion of an internal combustion eng1ne.`

1 is the intake manifold having the parallel main passages 2 and 3,which are adapted to be connected to the discharge assages of a dual carburetor. 4 are oppositely extending inner intermediate passages connecte'd at their adjacent ends to the main passage 2, and 5 are oppositely-extending outer intermediate passages connected at their adjacent ends to the main passage 3. These intermediate passages are separated by the common vertical wall 6. 7 and 8 are delivery passages leading from each of the inner and outer intermediate passages 4 and 5 respectively and adapted to communicate with the intake ports 9 of the multi-c linder internal combustion engine 10. T e delivery passages 7 are return-bent and extend toward each other while the delivery passages 8 extend away from each other. Also, these delivery passages arelall in the same vertical plane between the inner intermediate assages 4 and the engine 10. The cross sectional areas of the corresponding passages from the carburetor to the engine are equal and also the combined lengths of these passages are approximately equal, the combined lengths of the inner intermediate passages and their respectivedelivery passages beingv slightly less than the combined len hs of the outer intermediate passages andA t eir respective delivery passages to com ensate for the change in direction of the ow of the explosive mixture so that equal volumes of the explosive mixture flow from the carburetor to the engine cylinders.

For the purpose of heating any liquid fuel which drops from the explosive mixture while flowing through the intake manifold, I have provided the exhaust manifoldy 11 located'preferably below the intake manifold land preferably integral therewith, these manifolds being separated by the same horizontal wall 12 which forms the lower side of 70 the intake manifold and the uppery side of the exhaust manifold. The main passages 2 and 3 of the intake manifold extend vertically above the same and the' carburetor is preferabl located above this manifold also. With this arrangement, any liquid fuel which may drop from the explosive mixture while passing through the intake manifold comes into contact with the wall 12 which is heated throughout its entire extent by the passage of the combustion gases through the exhaust manifold. As a consequence this liquid fuel isl vaporized, after which itagain Hows with the explosive mixture.

` What I claim as my invention is v:

l. In an intake manifold construction for internal combustion engines having a plurality of aligned cylinders, a lurality of main passages, a pair of oppositely-extending intermediate passages leading from each 90 of said main passages, and a pair of oppositely-extendingy delivery passages leadin from corresponding ,ends of the pair of sai intermediate passages and adapted to communicate with the cylinders, each of said intermediate passages with its respective delivery passage olering the same resistance to flow ofthe explosive mixture therethrough.

2. In a manifold construction for an internal combustion engine, a pair of paral- 100 .lel main passages, oppositely-extending intermediate passages leading from each of said main passages, said intermediate passages extending in substantial f parallelism to each other, delivery passages leading from 106 the combined lengths of each of said firstmentioned intermediate passages and their -respective delivery passages being sufficiently less than the combined lengths' of each of the other intermediate passages and their respective delivery passages to compensate for the change in direction of flow of the fluid therethrough.

3. In a manifold construction for an internal combustion engine, the combination with a horizontally-extending exhaust inani- Vfold construction and an intake manifold construction extending adjacent to said exhaust manifold and having a wall adapted to be heated by said exhaust manifold construction, said intake manifold construction having upwardly-exteiiding main passages, a pair of oppositely-extending intermediate passages connecting into each of said main passages, and oppositely-extending delivery passages atthe corresponding ends of said intermediate passages adapted to communicate with the cylinders.

4. In a manifold construction for an internal combustion engine, the combination with a horizontally-extending exhaust mani,- fold construction and an intake manifold construction extending adjacent to said exhaust manifold and having its interior separated from the interior of said exhaust manifold construction by a wall common to both, said intake manifold construction having a pair of upwardly-extending main passages, parallel intermediate passages extending in opposite directions from each of said main passages, and oppositely-extending delivery passages leading from the same ends of said intermediate passages.

5. A manifold construction for an eightcylinder internal combustion engine, the cylinders being ini alignment, a carbureter, a pair of separate vertically extending main lfuel conducting passages in direct communication with said carbureter, a pair of intermediate parallel passages communicating directly with said main passa-ges respectively, each of said intermediate passages having oppositely and outwardly extending portions, a air of oppositely and outwardly extending elivery passages directly communicating with corresponding ends of one of said intermediate passages, each of said delivery passages communicating with a pair of cylinders for supplying fuel thereto, a second pair of oppositely and inwardly extending delivery passages directly communicating with corresponding ends of the other of said intermediate passages, each of the last said delivery passages communicating with other pairs of said cylinders, the cross sectional areas and lengths of the said intermediate passages and their-respective delivery passages being arranged to conduct substantially equal volumes of the fuel from the carbureter to the cylinders of the engine..

6. A manifold construction for an eightcylinder combustion engine, the cylinders being in alignment, a carbureter, a pair of separate vertically extending main fuel conducting passages in direct communication with said carbureter, a pair of intermediate parallel passages communicating directly with said main passages respectively, each of said yintermediate passages having oppositely and outwardly extending portions, apair of oppositely and outwardly extending delivery passages directly communicating with corresponding ends of one of said intermediate passages, each of said delivery passages communicating with a pair of cylinders for supplying fuel thereto, a second pair of oppositely and inwardly extending delivery passages directly communicating with corresponding ends of the other of said intermediate passages, each of the last said delivery passages communicating with other pairs of said cylinders, the cross sectional areas and lengths of the said intermediate passages and their respective delivery passages being arranged to conduct substantially equal volumes of the fuel from the carbureter to the cylinders of the engine, said intermediate and delivery passages lying in a common plane, and an exhaust passage formed in a plane parallel withv that aforesaid for conductin the 4exhaust gases from the engine cylin ers into heat transfer relation to the said intermediate delivery passa es.

7. A fuel mixture supplying device comprising in combination with an internal combustion engine having eight aligned cylinders; a pair of conduits; .fuel mixture supply means for the conduits; one of said conduits extending from said fuel mixture supply means to supply fuel mixture to the third, fourth, fifth and sixth of ,said cylinders; the other of said conduits extending from said fuel mixture supply means to supply fuel mixture to the first, second, seventh and eighth of said cylinders; said conduits separately conducting the fuel mixture from the fuel mixture supply means to the respective cylinder groups aforesaid.

8. In combination with an internal com-v bustion engine having eight aligned cylinders; a dual carburetor positioned substantially at the mid-point longitudinally of the engine cylinders; a pair of vertically extending manifold conduits separately coinpassage extending generally longitudinally with respect to the engine cylinders and communicating with one of said vertical] extending manifold conduits, opposite ends of said manifold passage being arranged for respectively supplying fuel mixture to third, fourth and to the fifth, sixth, of said engine cylinders; a second manifold passage extending generally longitudinally with remunicating with the carburetor; a manifold iso spect to the engine cylinders and communifold passages separately conductin fuel eating with the other of said vertically exmixture from the respective manfo d contending manifold conduits, .opposite ends of duits to the respective cylinder groups 10 said second manifold passage bein araforesaid. j

5 ranged for respectively suplym fue m`ix- In testimony whereof I ax my signature to the first, second, an to t e seventh, ture. eighth, of said engine cylinders, said man CHARLES L. MoCUEN. 

